//
//  AppDelegate.swift
//  01.XinLangWB
//
//  Created by xiaoyudong on 16/4/6.
//  Copyright © 2016年 苏小样. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        let account = XYUserAccountViewModel.shareAccountModel.loadUserInfo()
        print(account)
        
        
        
        setNavBarThemeColor()
        //注册通知
        registerNotification()
        window = UIWindow(frame: UIScreen.mainScreen().bounds)
        window?.backgroundColor = UIColor.whiteColor()
//        window?.rootViewController = XYMainViewController()
        //欢迎界面
        window?.rootViewController = defaultRootViewController()
        //window 可视化
        window?.makeKeyAndVisible()
        return true
    }
    private func setNavBarThemeColor(){
        //设置全局的颜色
        //全局颜色的设置必须在控件实例化之前
        UINavigationBar.appearance().tintColor = UIColor.orangeColor()
    }
    //根据用户登录 来选择对应的根视图控制器
    private func defaultRootViewController()->UIViewController{
        return XYUserAccountViewModel.shareAccountModel.userLogin ?
        XYWelcomeViewController() : XYMainViewController()
    }
    //MARK: 通知监听的方法
    @objc private func changeRootViewController(n: NSNotification) {
        print(n)
        //切换根视图控制器
        if n.object != nil {
            //从欢迎页面发出的通知
            window?.rootViewController = XYMainViewController()
        }else{
            //从授权页面发出的通知
            window?.rootViewController = XYWelcomeViewController()
            
        }
        
    }

    //MARK:注册通知
    private func registerNotification() {
       // object: 监听那个对象发出的通知  一般设置为 nil 表示监听任意对象发出的通知
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "changeRootViewController:", name: XYSwitchRootViewController, object: nil)
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }
   //MARK 移除通知  编码规范而已
    deinit{
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }

}

